I added the required dependency. But the Android Studio is showing the below line. Adview is showing and no other issue. I checked everything carefully, But I see the below time every time.
com.google.android.gms.ads.formats.UnifiedNativeAdView, was not found in the project or the libraries
That was deprecated and got replaced with this tag NativeAdView
<com.google.android.gms.ads.nativead.NativeAdView>
If you were using SDK v20
for ex:
implementation 'com.google.android.gms:play-services-ads:20.4.0' // end more
you have to notice this changes.
There a lot of class has been renamed and removed. For detail here
Check the version of google ads you're using. It could be the dependency you have is an older version. Is it >= 17.0.0? Check the release notes https://developers.google.com/admob/android/rel-notes?hl=es